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Finding the Fourth Proportional to 55,269.60, 82,904.40 and 45,428.10

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Solution

The fourth proportional to 55,269.60, 82,904.40 and 45,428.10 is: 68,142.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,269.60 : 82,904.40 = 45,428.10 : x
  2. Step 2: Convert to fraction form
    55,269.60/82,904.40 = 45,428.10/x
  3. Step 3: Cross multiply
    55,269.60x = 82,904.40 × 45,428.10
  4. Step 4: Simplify right side
    55,269.60x = 3,766,189,373.64
  5. Step 5: Solve for x
    x = 3,766,189,373.64/55,269.60
  6. Step 6: Final answer
    x = 68,142.15

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.